148ND 148PR B- DECAY (2.29 M) 1988KA14,1997GR09 26NDS 202601
148ND H TYP=FUL$AUT=N. NICA$CIT=NDS 208, 1 (2026)$CUT=17-Jan-2026$
148ND c 1988Ka14: radioactive source from {+235}U(n,F), E=th at the TRIGA
148ND2c Mainz reactor using HELIOS ion separator. Used tape transport and
148ND2c measured E{-|g}, I{-|g}, |g|g-coin, |g|g(|q), with |b-gated |g
148ND2c multiscaling measurements. Used 3 Ge(Li) detectors for |g|g-coin
148ND2c (2.3, 1.9, and 1.8 keV FWHM at 1332 keV) and 2 Ge(Li) detectors for
148ND2c |g|g(|q) (1.9 keV FWHM at 1332 keV for both).
148ND2c Deduced levels, J, |p.
148ND c 1997Gr09,1996Gr20: total absorption |g-ray spectrometer (TAGS) system
148ND2c used to measure |b-decay intensities, and the g.s. |b{+-} feeding when
148ND3c operated in the 4|p|g-|b coin mode
148ND c Measured: |g, |g|g
148ND2c (1988Ka14,1986Wa06,1986BuZV,1979Ta17,1979Ik06,1979Bo26,1977Re11,
148ND3c \1977Bj02,1976Ya06,1976Sk04) |g|g(|q) (1988Ka14,1979Ik06), |b, |b|g
148NDxc (1986Gr11,1979Ik06,1978St03,1976LoZT)
148ND c Level scheme is that of 1988Ka14. TAGS data from 1997Gr09 with a
148ND2c number of pseudolevels with |?25% |b{+-} feeding to them indicates
148ND2c that the level scheme is not complete and has large uncertainties
148ND4c associated with it.
148ND cB $Due to the large uncertainties associated with the pseudo levels
148ND3cB and the incompleteness of the level scheme, the I|b{+-} and log| {Ift}
148ND3cB values are rather limits and listed with no unceratinties
148ND cB IB From I(|g+ce) imbalance at each level, unless indicated
148ND2cB otherwise.
148ND cB IB$TAGS analysis gives the following pseudolevels and associated
148ND2cB I|b (in %) in addition to the discrete levels listed. 2650 keV 1.18;
148ND3cB 2750 keV 1.39; 2850 keV 0.80; 3200 keV 0.70; 3300 keV 0.80;
148ND4cB 3400 keV 1.39; 3500 keV 1.61; 3600 keV 0.86; 3700 keV 0.75;
148ND5cB 3800 keV 1.29; 3900 keV 2.04; 4000 keV 4.82; 4100 keV 4.50;
148ND6cB 4200 keV 1.82; 4300 keV 0.96; 4400 keV 0.32;
148ND7cB 4500 keV 0.064; 4600 keV 0.032; 4700 keV 0.011. The TAGS
148ND8cB spectrum is
148ND9cB estimated to have |?1.5% uncorrected contamination of {+148}Pr(2.0
148NDAcB min). Since the resolution of the TAGS system is typically 50-100 keV,
148NDBcB the intensity assigned to a pseudolevel may represent |b{+-} feeding to
148NDCcB a single level or a group of levels. The same limitation applies to
148NDDcB the intensity assigned to a known level, since it could include
148NDEcB feeding to known or unknown levels in the resolution energy range.
148ND cG M,MR From adopted gammas; supported by |g|g(|q) from this data
148ND2cG set
148ND cG MR(A) From |g|g(|q) (1988Ka14)
148ND cG E,RI From 1988Ka14
148ND cL E From a least-squares fit to E|g data
148ND cL J Adopted values; supported by |g|g(|q) from this data set
148ND dG CC$From BrIcc v2.3e (17-Jun-2020) 2008Ki07, "Frozen Orbitals" appr.
148PR P 0.0 1- 2.29 M 2 4873 15
148PR cP QP$From 2021Wa16
148ND N 0.626 18 1 1
148ND cN NR |SI(|g+ce) and g.s. |b{+-} feeding of 21.9% {I15} from TAGS
148ND2cN analysis (1997Gr09). The uncertainty in I|g normalization does not
148ND3cN include that due to an incomplete decay scheme as indicated by |?25%
148ND4cN |b{+-} feeding to the pseudolevels observed in the TAGS measurements.
148ND PN 3
148ND G 999.0 5 0.7 4
148ND2 G %IG=0.44 25
148ND G 1658.5 120.6 4
148ND2 G %IG=0.38 25
148ND G 1682.8 100.7 3
148ND2 G %IG=0.44 19
148ND G 2141.8 100.6 4
148ND2 G %IG=0.38 25
148ND G 2222.5 100.6 5
148ND2 G %IG=0.38 31
148ND G 2982.6 5 1.0 2
148ND2 G %IG=0.63 13
148ND L 0.0 0+ STABLE
148ND B 21.9 7.2
148NDS B EAV=2091.2 70
148ND cB E$Others: 4800 {I200} (1979Ik06), 5010 {I120} (1978St03); see 1986Gr11
148ND cB IB from TAGS (1997Gr09)
148ND L 301.703 162+ 80 PS 3
148ND B 27.7 7.0
148NDS B EAV=1950.8 70
148ND cB E$Others: 4500 {I200} (1979Ik06), 3630 {I200} (1976LoZT)
148ND cB IB 18.22 from TAGS (1997Gr09)
148ND G 301.702 16100 E2 0.0515 7 N
148NDS G KC=0.0408 6$LC=0.00840 12$MC=0.001839 26
148NDS G NC=0.000404 6$OC=5.69E-5 8$PC=2.240E-6 31
148ND2 G %IG=62.6 18
148ND cG M from |g|g(|q) (1979Ik06)
148ND cG E from 1979Bo26
148ND L 752.21 134+ 6.9 PS 3
148ND cL J=4 from |g|g(|q) (1988Ka14)
148ND B 1.3 8.1 ?
148NDS B EAV=1741.3 70
148ND cB IB$0.0 from TAGS (1997Gr09); questionable |DJ=3 |b{+-} decay branch
148ND G 450.8 3 4.7 7 E2 0.0156422
148NDS G KC=0.01286 18$LC=0.002187 31$MC=0.000472 7
148NDS G NC=0.0001045 15$OC=1.515E-5 21$PC=7.46E-7 11
148ND2 G %IG=2.9 5
148ND L 916.88 100+ 4.4 PS 3
148ND cL J=0 from |g|g(|q) (1979Ik06,1988Ka14)
148ND B 2.0 7.9
148NDS B EAV=1664.9 70
148ND cB IB 0.96 from TAGS (1997Gr09)
148ND G 615.1 1 3.9 6 E2 0.0068710
148NDS G KC=0.00575 8$LC=0.000881 12$MC=0.0001885 26
148NDS G NC=4.19E-5 6$OC=6.18E-6 9$PC=3.42E-7 5
148ND2 G %IG=2.4 4
148ND L 999.29 9 3-
148ND cL J=3 from |g|g(|q) (1988Ka14); consistent with J=3 from
148ND2cL |g|g(|q) (1979Ik06)
148ND B 4.3 7.5
148NDS B EAV=1626.7 70
148ND cB IB 0.29 from TAGS (1997Gr09)
148ND G 247.4 3 1.3 5
148ND2 G %IG=0.81 31
148ND G 697.5 1 9.3 11E1 1.91E-3 3
148NDS G KC=0.001640 23$LC=0.0002105 29$MC=4.42E-5 6
148NDS G NC=9.88E-6 14$OC=1.495E-6 21$PC=9.63E-8 13
148ND2 G %IG=5.8 7
148ND cG |d(Q/D)=+0.08 {I77} (1988Ka14)
148ND L 1023.20 131-
148ND cL J=1 from |g|g(|q) (1988Ka14); consistent with J=1 from
148ND2cL |g|g(|q) (1979Ik06)
148ND B 4.4 7.5
148NDS B EAV=1615.6 70
148ND cB IB 0.36 from TAGS (1997Gr09)
148ND cB E 3000 {I250} (1976LoZT)
148ND G 721.3 3 6.1 10E1 1.78E-3 3
148NDS G KC=0.001530 21$LC=0.0001961 28$MC=4.12E-5 6
148NDS G NC=9.21E-6 13$OC=1.394E-6 20$PC=9.00E-8 13
148ND2 G %IG=3.8 6
148ND cG |d(Q/D)=+0.04 {I+70-60} (1988Ka14)
148ND G 1023.2 2 9.1 10E1 8.95E-413 N
148NDS G KC=0.000772 11$LC=9.76E-5 14$MC=2.048E-5 29
148NDS G NC=4.58E-6 6$OC=6.96E-7 10$PC=4.57E-8 6
148ND2 G %IG=5.7 6
148ND L 1170.92 122+ 1.4 PS 1
148ND cL J=2 from |g|g(|q) (1988Ka14); consistent with J=2 from
148ND2cL |g|g(|q) (1979Ik06)
148ND B 2.5 7.6
148NDS B EAV=1547.1 70
148ND cB IB 0.51 from TAGS (1997Gr09)
148ND G 418.7 1 0.3 2
148ND2 G %IG=0.19 13
148ND cG E,RI also seen in 1986Wa06
148ND G 869.2 2 6.6 10M1+E2 +8 +12-2 0.00307 5
148NDS G KC=0.00260 4$LC=0.000366 6$MC=7.78E-5 12
148NDS G NC=1.734E-5 26$OC=2.60E-6 4$PC=1.573E-7 25
148ND2 G %IG=4.1 6
148ND G 1171.2 3 1.7 5 E2 1.62E-3 2 N
148NDS G KC=0.001378 19$LC=0.0001852 26$MC=3.91E-5 5
148NDS G NC=8.74E-6 12$OC=1.321E-6 19$PC=8.36E-8 12$IPC=3.19E-6 5
148ND2 G %IG=1.06 31
148ND L 1248.63 9 2+ 1.4 PS 2
148ND cL J=2 from |g|g(|q) (1988Ka14)
148ND B 4.2 7.4
148NDS B EAV=1511.1 70
148ND cB IB 0.30 from TAGS (1997Gr09)
148ND G 496.8 6 0.4 3
148ND2 G %IG=0.25 19
148ND G 947.1 3 2.8 5 E2(+M1) 0.0032 7
148NDS G KC=0.0027 6$LC=0.00036 7$MC=7.7E-5 14
148NDS G NC=1.72E-5 32$OC=2.6E-6 5$PC=1.7E-7 4
148ND2 G %IG=1.75 32
148ND cG MR >+100 or <-9
148ND G 1248.6 1 8.8 24E2 1.43E-3 2 N
148NDS G KC=0.001213 17$LC=0.0001616 23$MC=3.41E-5 5
148NDS G NC=7.63E-6 11$OC=1.154E-6 16$PC=7.36E-8 10$IPC=1.233E-5 17
148ND2 G %IG=5.5 14
148ND L 1511.54 143+
148ND cL J=(1,3) from |g|g(|q) (1988Ka14)
148ND B 0.4 8.2 ?
148NDS B EAV=1389.6 70
148ND cB IB 0.143 from TAGS (1997Gr09)
148ND G 759.3 3 0.4 1 M1+E2 0.0053 12
148NDS G KC=0.0045 11$LC=0.00062 12$MC=0.000132 24
148NDS G NC=2.9E-5 5$OC=4.4E-6 9$PC=2.8E-7 7
148ND2 G %IG=0.25 6
148ND cG MR +0.035 {I15} or +5.0 {I+15-22}
148ND G 1209.9 2 2.6 14M1+E2 0.0018533
148NDS G KC=0.00158 29$LC=0.000207 35$MC=4.4E-5 7
148NDS G NC=9.8E-6 16$OC=1.49E-6 26$PC=9.8E-8 19$IPC=7.15E-6 14
148ND2 G %IG=1.6 9
148ND cG MR >400, <-28 or 0.20 {I4}
148ND L 1515.60 33
148ND B 1.0 7.9
148NDS B EAV=1387.7 70
148ND cB IB 0.32 from TAGS (1997Gr09)
148ND G 492.4 3 1.6 3
148ND2 G %IG=1.00 19
148ND L 1645.58 25
148ND cL J=0 from |g|g(|q) (1988Ka14)
148ND B 0.9 7.8
148NDS B EAV=1327.7 70
148ND cB IB 0.54 from TAGS (1997Gr09)
148ND G 622.7 4 0.8 2
148ND2 G %IG=0.50 13
148ND G 1343.7 3 0.7 1
148ND2 G %IG=0.44 6
148ND L 1659.91 5 2+
148ND cL J=(2,3) from |g|g(|q) (1988Ka14)
148ND B 8.8 6.8
148NDS B EAV=1321.1 70
148ND cB IB 5.27 from TAGS (1997Gr09)
148ND G 636.5 3 1.8 3
148ND2 G %IG=1.13 19
148ND G 660.0 3 2.8 3
148ND2 G %IG=1.75 20
148ND G 1358.23 5 10.7 18
148ND2 G %IG=6.7 12
148ND L 1683.3 4 4+
148ND cL J=(3,4) from |g|g(|q) (1988Ka14)
148ND B 2.6 7.3
148NDS B EAV=1310.3 70
148ND cB IB 1.55 from TAGS (1997Gr09)
148ND G 512.2 4 0.5 3
148ND2 G %IG=0.31 19
148ND G 933.7 240.3 1
148ND2 G %IG=0.19 6
148ND G 1382.1 103.4 8
148ND2 G %IG=2.1 5
148ND L 2073.67 152(+)
148ND cL J=2 from |g|g(|q) (1988Ka14)
148ND B 5.7 6.8
148NDS B EAV=1131.1 69
148ND cB IB 4.72 from TAGS (1997Gr09)
148ND G 562.4 2 0.5 1
148ND2 G %IG=0.31 6
148ND G 825.3 9 2.7 2
148ND2 G %IG=1.69 14
148ND G 903.1 7 2.1 3
148ND2 G %IG=1.31 19
148ND G 1050.5 7 0.6 1
148ND2 G %IG=0.38 6
148ND G 1156.5 2 0.8 2
148ND2 G %IG=0.50 13
148ND G 1771.7 6 2.4 2 (M1(+E2)) -0.03 +25-281.12E-3 2 A
148NDS G KC=0.000789 18$LC=0.0001012 23$MC=2.13E-5 5
148NDS G NC=4.77E-6 11$OC=7.30E-7 17$PC=4.92E-8 12$IPC=0.0001992 31
148ND2 G %IG=1.50 13
148ND L 2182.24 35
148ND cL J=(1-4) from |g|g(|q) (1988Ka14)
148ND B 0.5 7.7
148NDS B EAV=1081.5 69
148ND cB IB 0.75 from TAGS (1997Gr09)
148ND G 522.2 4 0.4 1
148ND2 G %IG=0.25 6
148ND G 1880.9 7 0.4 4
148ND2 G %IG=0.25 25
148ND L 2236.8 9
148ND B 0.1 8.4 ?
148NDS B EAV=1056.6 69
148ND cB IB 0.75 from TAGS (1997Gr09)
148ND G 1065.5 130.7 3
148ND2 G %IG=0.44 19
148ND L 2406.01 202+
148ND B 1.8 7.0
148NDS B EAV=979.7 68
148ND cB IB 2.48 from TAGS (1997Gr09)
148ND G 894.4 4 0.8 1
148ND2 G %IG=0.50 7
148ND G 1157.4 2 2.1 6
148ND2 G %IG=1.3 4
148ND L 2431.33 172+
148ND B 3.8 6.7
148NDS B EAV=968.2 68
148ND cB IB 5.26 from TAGS (1997Gr09)
148ND G 918.4 6 0.4 3
148ND2 G %IG=0.25 19
148ND G 1182.7 2 0.5 1
148ND2 G %IG=0.31 6
148ND G 1260.7 4 1.3 5
148ND2 G %IG=0.81 31
148ND G 1409.8 9 0.2 2
148ND2 G %IG=0.13 13
148ND G 2129.6 5 3.6 6
148ND2 G %IG=2.3 4
148ND L 2545.0 6 (1-) 0.25 PS 10
148ND B 0.9 7.2
148NDS B EAV=916.8 68
148ND cB IB 1.24 from TAGS (1997Gr09)
148ND G 1521.8 6 1.4 4
148ND2 G %IG=0.88 25
148ND L 2930.63 22(2-)
148ND B 4.1 6.3
148NDS B EAV=744.0 67
148ND cB IB 6.43 from TAGS (1997Gr09)
148ND G 1271.2 5 0.8 2
148ND2 G %IG=0.50 13
148ND G 1418.6 7 0.7 3
148ND2 G %IG=0.44 19
148ND G 1907.1 3 1.7 5
148ND2 G %IG=1.06 32
148ND G 1931.9 5 1.0 4
148ND2 G %IG=0.63 25
148ND G 2629.0 6 2.4 6
148ND2 G %IG=1.5 4
148ND L 3036.8 9
148ND B 1.1 6.7
148NDS B EAV=697.0 67
148ND cB IB 1.45 from TAGS (1997Gr09)
148ND G 800.0 1 0.6 5
148ND2 G %IG=0.38 31
148ND G 2735.3 111.2 5
148ND2 G %IG=0.75 31
148ND L 3129.9 8
148ND cL E from 1979Ik06; level not observed by 1988Ka14
148ND B 0.08 7.8
148NDS B EAV=656.0 66
148ND cB IB 1.23 from TAGS (1997Gr09)
148ND G 2106.7 8 0.13 3
148ND2 G %IG=0.081 19
148ND cG E,RI from 1979Ik06; |g not observed by 1988Ka14. 1979Ik06 also
148ND2cG place a 2130.37|g 20 depopulating this level. 1988Ka14; however, show
148ND3cG a 2129.6|g 5 depopulating the 2431.7 level.